Google supports the unavailable_after meta attribute, which will tell Google not to show this page in search results after the specified date/time. The problem with this, is that if you try to change the unavailable_after date later, Google might not pick up on it because Google may not try to crawl that page before the last given date.
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Google Rolling Out Read More Links Search Result Snippets
After several months of testing, Google seems to be rolling out the “Read more” links at the end of some of the search results listings. We saw Google test variations of this back in July and it now seems to be live.
No – Reddit It Not Blocking Google Search
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